ECF Arbiter Seminar - Materials by CAA Grading ECF Arbiter Seminar - Materials by CAA

Grading info  It is a condition of submitting results to the ECF for grading that the following data is collected, which will appear on the ECF grading website: The player’s forename and surname The club that the player is playing for, in the case of a team competition The player’s results of games against other players, including their date The following non-compulsory data, used by the ECF to help identify players, but is not publicly accessible: The player’s date of birth (note: the player’s age on 1st September and 1st January will be publicly accessible on the ECF website) The player’s gender

Non-gradable events The following types of game are ineligible for grading: Thematic Lightning Correspondence Games played without chess clocks Chess960 games

Inexperienced players often ask arbiters how grades are calculated The ECF uses a linear system The grade achieved in a game is the opponent’s grade + 50 for a win, the opponent’s grade – 50 for a loss and the opponent’s grade for a draw. The maximum difference in grade is limited to 40 points. For a 150 rated player the table gives examples Opp Grade Win Draw Loss 90 (taken as 110) 160 110 60 130 180 80 150 200 100 230 200 (taken as 190) 240 190 140 Calculating Grades

Calculating Grades The players grade will be the average of all games played. FIDE ratings are more complicated and are not covered in this course. The ECF recommends that FIDE rating = 7.5 x ECF + 700 ECF Grade = (FIDE – 700)/7.5